The nearest airport is SNO - Sakon Nakhon, located 116.8 km south of Thông Nagnai.
Other airports nearby include VTE - Vientiane Wattay Intl (163.5 km west), UTH - Udon Thani (167.3 km south west), ZVK - Savannakhet (200.7 km south), LPQ - Luang Prabang Luang Phabang Intl (272.4 km north west),